Surgical knife



FIG. 1 is a perspective view of a surgical knife showing my new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image of FIG. 2;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is an enlarged view of the portion indicated by line 7-7 in FIG. 1;

FIG. 8 is an enlarged view of the portion indicated by line 8-8 in FIG. 2;

FIG. 9 is an enlarged view of the portion indicated by line 9-9 in FIG. 3;

FIG. 10 is an enlarged view of the portion indicated by line 10-10 in FIG. 4;

FIG. 11 is an enlarged view of the portion indicated by line 11-11 in FIG. 5; and,

FIG. 12 is an enlarged view of the portion indicated by line 12-12 in FIG. 6.

The features shown in broken lines in the drawings depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a surgical knife, as shown and described. 